diff --git a/package_versions.txt b/package_versions.txt
index 2ef88065..5b7c63c2 100755
--- a/package_versions.txt
+++ b/package_versions.txt
@@ -47,7 +47,7 @@ faenza-icon-theme-xterm-1.3.1-r6
 ffmpeg-libs-4.4.1-r2
 ffmpegthumbnailer-2.2.2-r2
 fftw-single-libs-3.3.10-r0
-firefox-esr-91.8.0-r0
+firefox-esr-91.9.0-r0
 flac-1.3.4-r0
 font-alias-1.0.4-r0
 font-cursor-misc-1.0.3-r1